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How do Trigonometric functions work?

...angles between 0 and 45 degrees, you can bootstrap your way to calculating all trig functions for all angles. Once you've reduced your argument, most chips use a CORDIC algorithm to compute the sines and cosines. You may hear people say that computers use Taylor series. That sounds reasonable, but...
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.gitignore after commit [duplicate]

...o keep the local copy but remove from the repo. ) So if you want to remove all the exe's from your repo do git rm --cached /\*.exe (Note that the asterisk * is quoted from the shell - this lets git, and not the shell, expand the pathnames of files and subdirectories) ...
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How do you add an in-app purchase to an iOS application?

How do you add an in-app purchase to an iOS app? What are all the details and is there any sample code? 5 Answers ...
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How to convert wstring into string?

...e <locale> #include <vector> int main() { std::setlocale(LC_ALL, ""); const std::wstring ws = L"ħëłlö"; const std::locale locale(""); typedef std::codecvt<wchar_t, char, std::mbstate_t> converter_type; const converter_type& converter = std::use_facet<converter...
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Visual Studio “Could not copy” … during build

...ning Visual Studio. This "bug" has existed since Visual Studio 2003. Finally, I have also found that I can often overcome this problem by simply renaming the executable file and then deleting it. share | ...
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Website screenshots

... Sure you can, but you'll need to render the page with something. If you really want to only use php, I suggest you HTMLTOPS, which renders the page and outputs it in a ps file (ghostscript), then, convert it in a .jpg, .png, .pdf.. can be little slower with complex pages (and don't support all the ...
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Intellij reformat on file save

... https://github.com/dubreuia/intellij-plugin-save-actions/issues/63 I actually tried to assign reformat to Ctrl+S and it worked fine - saving is done automatically now. share | improve this answer ...
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Maven-like dependency management for C++? [closed]

... I have a C++ project that is split in several subprojects. The subproject all produce a DLL and different teams of developers work on each of the subproject. Now if I want to build the main project, is there a way to avoid having to build all the subprojects by myself? ...
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IntelliJ inspection gives “Cannot resolve symbol” but still compiles code

... First of all you should try File | Invalidate Caches and if it doesn't help, delete IDEA system directory. Then re-import the Maven project and see if it helps. In some weird cases compiled classes may report wrong info and confuse I...
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SQLAlchemy: Creating vs. Reusing a Session

Just a quick question: SQLAlchemy talks about calling sessionmaker() once but calling the resulting Session() class each time you need to talk to your DB. For me that means the second I would do my first session.add(x) or something similar, I would first do ...